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Preparation method of dope

A coating and raw material technology, which is applied to the preparation of coatings by using pyrite slag, can solve the problems of large resources, energy consumption and high cost, and achieve the effects of low cost, high comprehensive utilization of resources and wide sources.

Inactive Publication Date: 2010-01-06
云南常青树投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, my country's paint production mainly uses special materials such as titanium dioxide and lithopone as fillers. These fillers need to be specially produced, and the cost is high, and the resources and energy consumption are very large.

Method used

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  • Preparation method of dope
  • Preparation method of dope

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Effect test

Embodiment 1

[0045] The pyrite (containing S: 19%) mined by Yunnan Weixin is crushed into fine particles less than 4mm, and then naturally stacked and dried to obtain dry materials with a water content of less than 6% for later use; the above dried materials are added to a conventional fluidized furnace, Carry out conventional boiling desulfurization at a temperature of 850-950°C to obtain slag; add white Portland cement binder to the slag, and add light calcium carbonate and talcum powder as auxiliary fillers to grind to -320 To obtain red powder coating. During on-site construction, add water, polyvinyl alcohol additives, toughening and leveling agents, etc. into the powder coating, stir evenly, and adjust it to a fluid coating with a certain viscosity. The coating can be applied not only on dry cement walls, but also on wet walls that have just been constructed but have initially hardened. The coating has good adhesion, hardness and scrubbing resistance, and is environmentally friendly....

Embodiment 2

[0048] The raw material of pyrite (containing S: 16%) mined in Hulong, Gulin, Sichuan, was crushed into fine particles smaller than 4mm, and then naturally stacked and dried to obtain materials with a water content of less than 6% for use; the above materials were added to conventional In the boiling furnace, at a temperature of 900-980°C, conventional boiling roasting desulfurization is carried out to obtain slag, and the slag is crushed to 0.5mm-0.1mm fine powder, and the magnetic field strength is 2000-12000GS. The magnetic separator performs dry magnetic separation to make the Fe in the slag 2 o 3 The content is less than 4%, and the main component of the slag after selection is amorphous Al formed after kaolinite is calcined and decomposed. 2 o 3 and SiO 2 , anatase TiO 2 and a small amount of Fe 2 o 3 and Fe(OH) 3 , add a small amount of light calcium carbonate, talc powder, sericite powder auxiliary filler to this slag, then add lead chrome yellow color filler, g...

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Abstract

The invention provides a preparation method of a dope. The preparation method comprises the following steps: directly crushing mined pyrite to particles smaller then 4mm, drying or naturally airing till the water content is less than 6 percent, boiling and baking to desulfurize through to obtain cinder with sulfur content less than 1 percent, mixing the cinder or cinder which contains 2-20 percent of Fe2O3 and is obtained by removing iron with the common method and equipment with component kind or / and color kind of filling agent, adhesive and the like and grinding to obtain paint power or powder emulsion after being screened by 320 meshes. In addition, the invention also provides by-products of iron concentrate powder, sulfuric acid or sulfur. The invention has wide range of raw material sources and low cost, greatly reduces the production cost of the dope, and opens up a shortcut for comprehensive utilization of pyrite resources in middle-low grade. The dope can be applied to a dry cement wall surface as well as a preliminarily hardened wet wall surface which is just constructed; and a coating has favorable adhesive ability, rigidity and washing resistance ability and no environmental pollution.

Description

technical field [0001] The invention relates to a method for preparing paint, in particular to a method for preparing paint by using pyrite slag, and belongs to the technical field of building materials. Background technique [0002] my country is rich in pyrite resources, accounting for 10% of the world's total reserves, ranking third in the world. However, it is dominated by medium and low-grade pyrite, rich ore (that is, sulfur content ≥ 35%) only accounts for about 4% of the total reserves, and the average geological grade is 17.68%. Pyrite is the main sulfur resource in my country, accounting for 80% of the total sulfur resources; meanwhile, pyrite is also a compound resource. The recovery of sulfur from pyrite ore in my country is mainly through sulfur smelting or washing to make sulfur concentrate. Indigenous sulfur refining not only has a low yield of sulfur (usually only 38-40%), but also seriously pollutes the environment, and the economic and social benefits are...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B28/34C04B28/04C04B28/10C04B26/04C04B26/06C04B26/10C04B26/28C04B26/20C04B26/32C04B18/14
Inventor 冯启明陈爱中
Owner 云南常青树投资有限公司
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